vue 把table数据对象导出成Excel

把list数据对象导出成Excel

安装插件

// yarn
yarn add file-saver xlsx
yarn add script-loader
yarn add xlsx-style
// npm 
npm install -S file-saver xlsx
npm install -D script-loader
npm install -S xlsx-style

安装完插件之后可以在src目录下的utils公共类目录下建一个excel的文件夹，里面建一个Export2Excel.js的文件。（我这边excel文件已存在就新建了excel_new下面）
copy下面js到Export2Excel.js

require('script-loader!file-saver');
import XLSX from 'xlsx-style'

function generateArray(table) {
  var out = [];
  var rows = table.querySelectorAll('tr');
  var ranges = [];
  for (var R = 0; R < rows.length; ++R) {
    var outRow = [];
    var row = rows[R];
    var columns = row.querySelectorAll('td');
    for (var C = 0; C < columns.length; ++C) {
      var cell = columns[C];
      var colspan = cell.getAttribute('colspan');
      var rowspan = cell.getAttribute('rowspan');
      var cellValue = cell.innerText;
      if (cellValue !== "" && cellValue == +cellValue) cellValue = +cellValue;

      //Skip ranges
      ranges.forEach(function (range) {
        if (R >= range.s.r && R <= range.e.r && outRow.length >= range.s.c && outRow.length <= range.e.c) {
          for (var i = 0; i <= range.e.c - range.s.c; ++i) outRow.push(null);
        }
      });

      //Handle Row Span
      if (rowspan || colspan) {
        rowspan = rowspan || 1;
        colspan = colspan || 1;
        ranges.push({
          s: {
            r: R,
            c: outRow.length
          },
          e: {
            r: R + rowspan - 1,
            c: outRow.length + colspan - 1
          }
        });
      }
      ;

      //Handle Value
      outRow.push(cellValue !== "" ? cellValue : null);

      //Handle Colspan
      if (colspan)
        for (var k = 0; k < colspan - 1; ++k) outRow.push(null);
    }
    out.push(outRow);
  }
  return [out, ranges];
};

function datenum(v, date1904) {
  if (date1904) v += 1462;
  var epoch = Date.parse(v);
  return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
}

function sheet_from_array_of_arrays(data, opts) {
  var ws = {};
  var range = {
    s: {
      c: 10000000,
      r: 10000000
    },
    e: {
      c: 0,
      r: 0
    }
  };
  for (var R = 0; R != data.length; ++R) {
    for (var C = 0; C != data[R].length; ++C) {
      if (range.s.r > R) range.s.r = R;
      if (range.s.c > C) range.s.c = C;
      if (range.e.r < R) range.e.r = R;
      if (range.e.c < C) range.e.c = C;
      var cell = {
        v: data[R][C]
      };
      if (cell.v == null) continue;
      var cell_ref = XLSX.utils.encode_cell({
        c: C,
        r: R
      });

      if (typeof cell.v === 'number') cell.t = 'n';
      else if (typeof cell.v === 'boolean') cell.t = 'b';
      else if (cell.v instanceof Date) {
        cell.t = 'n';
        cell.z = XLSX.SSF._table[14];
        cell.v = datenum(cell.v);
      } else cell.t = 's';

      ws[cell_ref] = cell;
    }
  }
  if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);
  return ws;
}

function Workbook() {
  if (!(this instanceof Workbook)) return new Workbook();
  this.SheetNames = [];
  this.Sheets = {};
}

function s2ab(s) {
  var buf = new ArrayBuffer(s.length);
  var view = new Uint8Array(buf);
  for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
  return buf;
}

export function export_table_to_excel(id) {
  var theTable = document.getElementById(id);
  var oo = generateArray(theTable);
  var ranges = oo[1];

  /* original data */
  var data = oo[0];
  var ws_name = "SheetJS";

  var wb = new Workbook(),
    ws = sheet_from_array_of_arrays(data);

  /* add ranges to worksheet */
  // ws['!cols'] = ['apple','banan'];
  ws['!merges'] = ranges;

  /* add worksheet to workbook */
  wb.SheetNames.push(ws_name);
  wb.Sheets[ws_name] = ws;

  var wbout = XLSX.write(wb, {
    bookType: 'xlsx',
    bookSST: false,
    type: 'binary'
  });

  saveAs(new Blob([s2ab(wbout)], {
    type: "application/octet-stream"
  }), "test.xlsx")
}

export function export_json_to_excel({
  title,
  multiHeader = [],
  header,
  data,
  filename,
  merges = [],
  autoWidth = true,
  bookType = 'xlsx'
} = {}) {
  // 空值默认值处理
  data.map(item => {
      item.map((i, index) => {
      if (!i) {
          item[index] = '--'
      }
      })
  })
  /* original data */
  filename = filename || 'excel-list'
  data = [...data]
  data.unshift(header);
  data.unshift(title);
  for (let i = multiHeader.length - 1; i > -1; i--) {
    data.unshift(multiHeader[i])
  }

  var ws_name = "SheetJS";
  var wb = new Workbook(),
    ws = sheet_from_array_of_arrays(data);

  if (merges.length > 0) {
    if (!ws['!merges']) ws['!merges'] = [];
    merges.forEach(item => {
      ws['!merges'].push(XLSX.utils.decode_range(item))
    })
  }

  if (autoWidth) {
    /*设置worksheet每列的最大宽度*/
    const colWidth = data.map(row => row.map(val => {
      /*先判断是否为null/undefined*/
      if (val == null) {
        return {
          'wch': 10
        };
      }
      /*再判断是否为中文*/
      else if (val.toString().charCodeAt(0) > 255) {
        return {
          'wch': val.toString().length * 2
        };
      } else {
        return {
          'wch': val.toString().length
        };
      }
    }))
    /*以第一行为初始值*/
    let result = colWidth[0];
    for (let i = 1; i < colWidth.length; i++) {
      for (let j = 0; j < colWidth[i].length; j++) {
        if (result[j]['wch'] < colWidth[i][j]['wch']) {
          result[j]['wch'] = colWidth[i][j]['wch'];
        }
      }
    }
    ws['!cols'] = result;
  }

  /* add worksheet to workbook */
  wb.SheetNames.push(ws_name);
  wb.Sheets[ws_name] = ws;
  var dataInfo = wb.Sheets[wb.SheetNames[0]];

  const borderAll = {  //单元格外侧框线
    top: {
      style: 'thin'
    },
    bottom: {
      style: 'thin'
    },
    left: {
      style: 'thin'
    },
    right: {
      style: 'thin'
    }
  };
  //给所以单元格加上边框
  for (var i in dataInfo) {
    if (i == '!ref' || i == '!merges' || i == '!cols' || i == 'A1') {

    } else {
      dataInfo[i + ''].s = {
        border: borderAll
      }
    }
  }

  // 去掉标题边框
  // let arr = ["A1","B1","C1","D1","E1","F1","G1","H1","I1","J1","K1","L1","M1","N1","O1","P1","Q1","R1","S1","T1","U1","V1","W1","X1","Y1","Z1"];
  // arr.some(function (v) {
  //   let a = merges[0].split(':')
  //   if (v == a[1]) {
  //     dataInfo[v].s = {}
  //     return true;
  //   } else {
  //     dataInfo[v].s = {}
  //   }
  // })

  //设置主标题样式
  // console.log({
  //   title,
  //   header,
  //   data,
  //   filename,
  // });

  // console.log(merges)


  var wbout = XLSX.write(wb, {
    bookType: bookType,
    type: 'binary'
  });
  saveAs(new Blob([s2ab(wbout)], `${filename}.${bookType}`);
}

使用插件导出数据

import { export_json_to_excel } from "@/utils/excel_new/Export2Excel.js";
//放到一个测试方法里面
let tableList= [
	{
		name: '张三',
		age: 18,
		address: '杭州'
	},
	{
		name: '张三',
]
test() {
	const tHeader = ["姓名", "年龄", "地址"]
	const fliterVal = ["name", "age", "address"]
	const excelName = "人员表"
	const title = ['', '', ''] 
	const data = formatJson(filterVal, tableList)
	export_json_to_excel({
	      title,
	      header: tHeader,
	      data,
	      filename: excelName,
	      autoWidth: true,
	      bookType: 'xlsx'
	 })
}
formatJson(filterVal, jsonData){
  return jsonData.map(v => filterVal.map(j => v[j]))
}

碰到的问题

vue导入xlsx-style组件报错：Can‘t resolve ‘./cptable‘ in ‘xxx\node_modules_xlsx

解决方法在vue.config.js添加

configureWebpack: {
      externals:{
            './cptable': 'var cptable'
      },
 }

原文地址：https://blog.csdn.net/double_Fly_/article/details/126183609

vue 把table数据 对象导出成Excel

把list数据对象导出成Excel

碰到的问题

vue导入xlsx-style组件报错：Can‘t resolve ‘./cptable‘ in ‘xxx\node_modules_xlsx

解决方法 在vue.config.js添加

相关推荐

vue 把table数据对象导出成Excel

解决方法在vue.config.js添加